Originally Posted by GreedMOTO

OK, I looked at my old dyno plots and found something that may be helpful.

Stock EVO's on this Mustang dyno put down approx 200whp.
We all know the EVO is rated 271hp at the crank.

With my mods and my EVC V set at 22psi, I put down 240whp and 250ft/lb
The good run w/ full boost and mods netted say 312 crank hp @22psi

But, we had a bum run where we switched maps on the EVC V to the low boost setting (17psi) and put down 203whp and 201ft/lb.

So, crank hp on the bum run w/ partial boost and mods is 25-30% higher than whp so lets say 260hp at the crank @17psi

This leads to the 11psi question.
22psi = 312 crank hp with my mods.
17psi = 260 crank hp with my mods.
19psi = 271 crank hp (stock factory rating)
11psi = 156 crank hp (stock, no mods)

All this math is based on general rounding of ratios to simplifyand I took the higher numbers (ie. 30% drivetrain reduction), but you get the idea.

Hope I helped.

Originally Posted by donour

I'm skeptical. This estimate will be low because it assumes you're getting similiar gains, per psi, from 21 to 22 as from 11 to 12. The efficiency graphs I've seen for the stock turbo indicate that this isn't true.

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Originally Posted by GreedMOTO

My numbers were a general estimate, which is what this thread is about, no?